Identifying and Modeling Fractions

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Identifying and Modeling Fractions

• Pamela D. Coleman

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What is a fraction?

• A fraction represents a part of a whole or part
  of a set.

• Example
• The pizza slice is one part of the whole pizza.

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Fractions

• There are two numbers in a fraction.
• 1
• 2

• The top number is called the numerator.
• The bottom number is called the denominator.

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Fractions

• The numerator tells how many parts of the whole
  or set you have.
• The denominator tells how many parts the whole or
  set is divided into.

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• 2

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Example

• The circle is divided into 4 equal parts, or
  fourths.

• Each part is one-fourth of the whole circle - one
  part out of four parts in all.
• Two parts out of four parts would be
• Two-fourths or one half

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4
1 2
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Example

• Each part is one half of the whole window - one
  part out of two parts in all.
• Two parts out of two parts would be
• One whole or 2/2 or 1

• The window is divided into 2 equal parts, or
  halves.

1/2
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Part of a whole
Numerator tells how many parts of the whole you
have
Fractions
Denominator how many parts the whole is divided
into
Top number is the numerator
Bottom number is the denominator
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Practice...

• What fraction of the pizza has pepperoni on it?

• Hint How many slices have pepperoni on them?
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• Hint How many slices are there in all?
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• What fraction of the pizza has pepperoni on it?
• ¾ (three-fourths) Thats correct!

Play
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More practice

• What fraction of the teddy bears is not brown?

3/2
3/5
2/5
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References

• http//www.kidsnumbers.com/turkey-terminator-math-
  game.php

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Other helpful math websites

• http//www.mathplayground.com/games.html
• http//www.iknowthat.com/com/L3?AreaL2_Math

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Thank you!
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Correct!

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• 5
• Three - fifths

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• Oopslets try again

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